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Available Now! 
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B1E2D4
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 4A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
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B1E2D40
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 40A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
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B1E2D50
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 50A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
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B1E2D6
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 6A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
Available Now! 
Available Now!Noark
B1E2D60
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 60A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
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B1E2D63
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 63A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
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B1E2D8
Miniature Circuit Breaker, UL1077, 2-Poles, D-Curve, 8A, 5kA, 480Y/277VAC, Supplementary Protection
$22.95$22.95 -
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B1E3B1
Miniature Circuit Breaker, UL1077, 3-Poles, B-Curve, 1A, 5kA, 480Y/277VAC, Supplementary Protection
$33.58$33.58 -
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B1E3B1.6
Miniature Circuit Breaker, UL1077, 3-Poles, B-Curve, 1.6A, 5kA, 480Y/277VAC, Supplementary Protection
$33.58$33.58 -
Noark
B1E3B10
Miniature Circuit Breaker, UL1077, 3-Poles, B-Curve, 10A, 5kA, 480Y/277VAC, Supplementary Protection
$33.58$33.58 -
Noark
B1E3B13
Miniature Circuit Breaker, UL1077, 3-Poles, B-Curve, 13A, 5kA, 480Y/277VAC, Supplementary Protection
$33.58$33.58 -
Noark
B1E3B15
Miniature Circuit Breaker, UL1077, 3-Poles, B-Curve, 15A, 5kA, 480Y/277VAC, Supplementary Protection
$33.58$33.58
A circuit breaker will interrupt the flow of current in an electrical circuit, safeguarding surrounding electrical components and wiring by preventing circuit overloads and short circuits.
a.k.a. MCB, MCCB, molded case breaker, supplementary protection, UL1077, UL489, UL508, MMP, manual motor protector